Hi Jacob,

Well, OK, I'm new to .NET, as I'm a classic ASP developer. The solution I'm after is to post from within a DotNetNuke environment to an external site. This involves some security, of course.

The transactional data is made into a string, this string is hashed using HMAC-SHA1 and a token. The result of this is turned into Base64 for transportation, indeed, like you say. So, I missed a step there.

It appears I need a SHA1 option then. MS SQL can Base64 strings, I believe I've read somewhere that there are SHA1 implementations for SQL Server.

You already helped me define my problem more clearly 🙂 Thanks for that!

Best regards,

- Alex.